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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 476 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 3)) >> DTC/Circuit Diagnosis >> Ignition Signal >> Component Inspection (Ignition Coil with Power Transistor)

Component Inspection (Ignition Coil with Power Transistor)

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IGNITION COIL WITH POWER TRANSISTOR-1 
    1. Turn ignition switch OFF.
    2. Disconnect ignition coil harness connector. Refer to Component Parts Location .
    3. Check resistance between ignition coil terminals as per the following.
      G04074446Courtesy of NISSAN NORTH AMERICA, INC.

      Ignition coil with power transistor

      Resistance [Ohm at 25 deg.C (77 deg.F)]

      +

      -

      Terminal

      1

      2

      Except 0 or INF.

      3

      Except 0

      2

      3

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace malfunctioning ignition coil with power transistor. Refer to Removal and Installation .

  2. CHECK IGNITION COIL WITH POWER TRANSISTOR-2 
    CAUTION: Perform the following procedure in a place where with no combustible objects and good ventilation.
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Remove fuel pump fuse (#48) in IPDM E/R to release fuel pressure.
      GNSALBIA0738Z-738Courtesy of NISSAN NORTH AMERICA, INC.

      1.

      Fuel pump fuse

      2.

      IPDM E/R
      NOTE: Do not use CONSULT to release fuel pressure, or fuel pressure applies again during the following procedure.
    4. Start engine.
    5. After engine stalls, crank it two or three times to release all fuel pressure.
    6. Turn ignition switch OFF.
    7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. Refer to Component Parts Location .
    8. Remove ignition coil and spark plug of the cylinder to be checked.
    9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
    10. Connect spark plug and harness connector to ignition coil.
    11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal portion as shown in the figure.
      G04886523Courtesy of NISSAN NORTH AMERICA, INC.
    12. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal portion.

      Spark should be generated.
      CAUTION:
      • Never place the spark plug and the ignition coil within 50 cm (19.7 in) each other. Be careful not to get an electrical shock while checking, because the electrical discharge voltage becomes 20 kV or more.
      • It might damage the ignition coil if the gap of more than 17 mm (0.66 in) is made.
      NOTE: When the gap is less than 13 mm (0.52 in), spark might be generated even if the coil is malfunctioning.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace malfunctioning ignition coil with power transistor. Refer to Removal and Installation .

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